Subject: [linux-audio-dev] Re: new latency report
From: Andrew Morton (andrewm_AT_uow.edu.au)
Date: Fri Jul 07 2000 - 06:21:48 EEST
Roger Larsson wrote:
>
> Hi,
>
> The attached output shows that when we hit swap - there are
> code lines with latency problems :-(
> [the actual code tested is test3-pre2 with my latency modifications
> (improvement and profiling) but has one modification relative
> test3-pre4
> kswapd in the tested version always sleeps => problems accounted
> to the process causing it]
I'm losing sleep over kswapd.
> see the 293ms in generic_make_request...
Try adding the attached patch to your existing tree. It fixes a lot of stuff. sys_close() and sys_exit() still need attention.
> and the 704ms used to busy loop in modprobe...
> (SB16 non PnP)
Don't worry about it.
> These are worse then the previously found aux_write_dev :-(
Or this.
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